My memory's a bit foggy about what's in each one and how much of an acid trip they all are, but I'd say episodes 6-14 are kind of the sweet spot you're looking

My memory's a bit foggy about what's in each one and how much of an acid trip they all are, but I'd say episodes 6-14 are kind of the sweet spot you're looking for. The next several, from 15-19 cover some good stuff but are getting really wacky, and beyond that could be good if they weren't so damned weird.